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<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_javadoccomment"> * Copyright (C) 2006 Google Inc.</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_javadoccomment"> * Licensed under the Apache License, Version 2.0 (the "License");</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_javadoccomment"> * you may not use this file except in compliance with the License.</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_javadoccomment"> * You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_javadoccomment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_javadoccomment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_javadoccomment"> * See the License for the specific language governing permissions and</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_javadoccomment"> * limitations under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  
<a class="jxr_linenumber" name="17" href="#17">17</a>  <strong class="jxr_keyword">package</strong> com.googlecode.ehcache.annotations.util.guice;
<a class="jxr_linenumber" name="18" href="#18">18</a>  
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> com.googlecode.ehcache.annotations.util.guice.ReferenceType.STRONG;
<a class="jxr_linenumber" name="20" href="#20">20</a>  
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> java.io.IOException;
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> java.io.ObjectInputStream;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.io.ObjectOutputStream;
<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.io.Serializable;
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.lang.ref.Reference;
<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> java.lang.ref.ReferenceQueue;
<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> java.util.Collection;
<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> java.util.Collections;
<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> java.util.HashSet;
<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
<a class="jxr_linenumber" name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> java.util.Set;
<a class="jxr_linenumber" name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.ConcurrentHashMap;
<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.ConcurrentMap;
<a class="jxr_linenumber" name="35" href="#35">35</a>  
<a class="jxr_linenumber" name="36" href="#36">36</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="37" href="#37">37</a>  <em class="jxr_javadoccomment"> * Concurrent hash map that wraps keys and/or values in soft or weak</em>
<a class="jxr_linenumber" name="38" href="#38">38</a>  <em class="jxr_javadoccomment"> * references. Does not support null keys or values. Uses identity equality</em>
<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_javadoccomment"> * for weak and soft keys.</em>
<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;The concurrent semantics of {@link ConcurrentHashMap} combined with the</em>
<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_javadoccomment"> * fact that the garbage collector can asynchronously reclaim and clean up</em>
<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_javadoccomment"> * after keys and values at any time can lead to some racy semantics. For</em>
<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_javadoccomment"> * example, {@link #size()} returns an upper bound on the size, i.e. the actual</em>
<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_javadoccomment"> * size may be smaller in cases where the key or value has been reclaimed but</em>
<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment"> * the map entry has not been cleaned up yet.</em>
<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="48" href="#48">48</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;Another example: If {@link #get(Object)} cannot find an existing entry</em>
<a class="jxr_linenumber" name="49" href="#49">49</a>  <em class="jxr_javadoccomment"> * for a key, it will try to create one. This operation is not atomic. One</em>
<a class="jxr_linenumber" name="50" href="#50">50</a>  <em class="jxr_javadoccomment"> * thread could {@link #put(Object, Object)} a value between the time another</em>
<a class="jxr_linenumber" name="51" href="#51">51</a>  <em class="jxr_javadoccomment"> * thread running {@code get()} checks for an entry and decides to create one.</em>
<a class="jxr_linenumber" name="52" href="#52">52</a>  <em class="jxr_javadoccomment"> * In this case, the newly created value will replace the put value in the</em>
<a class="jxr_linenumber" name="53" href="#53">53</a>  <em class="jxr_javadoccomment"> * map. Also, two threads running {@code get()} concurrently can potentially</em>
<a class="jxr_linenumber" name="54" href="#54">54</a>  <em class="jxr_javadoccomment"> * create duplicate values for a given key.</em>
<a class="jxr_linenumber" name="55" href="#55">55</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="56" href="#56">56</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;In other words, this class is great for caching but not atomicity.</em>
<a class="jxr_linenumber" name="57" href="#57">57</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="58" href="#58">58</a>  <em class="jxr_javadoccomment"> * @author crazybob@google.com (Bob Lee)</em>
<a class="jxr_linenumber" name="59" href="#59">59</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="60" href="#60">60</a>  @SuppressWarnings(<span class="jxr_string">"unchecked"</span>)
<a class="jxr_linenumber" name="61" href="#61">61</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> ReferenceMap&lt;K, V&gt; <strong class="jxr_keyword">implements</strong> ConcurrentMap&lt;K, V&gt;, Serializable {
<a class="jxr_linenumber" name="62" href="#62">62</a>  
<a class="jxr_linenumber" name="63" href="#63">63</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> serialVersionUID = 0;
<a class="jxr_linenumber" name="64" href="#64">64</a>  
<a class="jxr_linenumber" name="65" href="#65">65</a>    <strong class="jxr_keyword">transient</strong> ConcurrentMap&lt;Object, Object&gt; delegate;
<a class="jxr_linenumber" name="66" href="#66">66</a>  
<a class="jxr_linenumber" name="67" href="#67">67</a>    <strong class="jxr_keyword">final</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceType.html">ReferenceType</a> keyReferenceType;
<a class="jxr_linenumber" name="68" href="#68">68</a>    <strong class="jxr_keyword">final</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceType.html">ReferenceType</a> valueReferenceType;
<a class="jxr_linenumber" name="69" href="#69">69</a>    <strong class="jxr_keyword">final</strong> ReferenceQueue&lt;Object&gt; referenceQueue;
<a class="jxr_linenumber" name="70" href="#70">70</a>  
<a class="jxr_linenumber" name="71" href="#71">71</a>    <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="72" href="#72">72</a>  <em class="jxr_javadoccomment">   * Concurrent hash map that wraps keys and/or values based on specified</em>
<a class="jxr_linenumber" name="73" href="#73">73</a>  <em class="jxr_javadoccomment">   * reference types.</em>
<a class="jxr_linenumber" name="74" href="#74">74</a>  <em class="jxr_javadoccomment">   *</em>
<a class="jxr_linenumber" name="75" href="#75">75</a>  <em class="jxr_javadoccomment">   * @param keyReferenceType key reference type</em>
<a class="jxr_linenumber" name="76" href="#76">76</a>  <em class="jxr_javadoccomment">   * @param valueReferenceType value reference type</em>
<a class="jxr_linenumber" name="77" href="#77">77</a>  <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="78" href="#78">78</a>    <strong class="jxr_keyword">public</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">ReferenceMap</a>(<a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceType.html">ReferenceType</a> keyReferenceType,
<a class="jxr_linenumber" name="79" href="#79">79</a>        <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceType.html">ReferenceType</a> valueReferenceType,
<a class="jxr_linenumber" name="80" href="#80">80</a>        ReferenceQueue&lt;Object&gt; referenceQueue) {
<a class="jxr_linenumber" name="81" href="#81">81</a>      ensureNotNull(keyReferenceType, valueReferenceType, referenceQueue);
<a class="jxr_linenumber" name="82" href="#82">82</a>  
<a class="jxr_linenumber" name="83" href="#83">83</a>      <strong class="jxr_keyword">if</strong> (keyReferenceType == ReferenceType.PHANTOM
<a class="jxr_linenumber" name="84" href="#84">84</a>          || valueReferenceType == ReferenceType.PHANTOM) {
<a class="jxr_linenumber" name="85" href="#85">85</a>        <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Phantom references not supported."</span>);
<a class="jxr_linenumber" name="86" href="#86">86</a>      }
<a class="jxr_linenumber" name="87" href="#87">87</a>  
<a class="jxr_linenumber" name="88" href="#88">88</a>      <strong class="jxr_keyword">this</strong>.delegate = <strong class="jxr_keyword">new</strong> ConcurrentHashMap&lt;Object, Object&gt;();
<a class="jxr_linenumber" name="89" href="#89">89</a>      <strong class="jxr_keyword">this</strong>.keyReferenceType = keyReferenceType;
<a class="jxr_linenumber" name="90" href="#90">90</a>      <strong class="jxr_keyword">this</strong>.valueReferenceType = valueReferenceType;
<a class="jxr_linenumber" name="91" href="#91">91</a>      <strong class="jxr_keyword">this</strong>.referenceQueue = referenceQueue;
<a class="jxr_linenumber" name="92" href="#92">92</a>    }
<a class="jxr_linenumber" name="93" href="#93">93</a>  
<a class="jxr_linenumber" name="94" href="#94">94</a>    V internalGet(K key) {
<a class="jxr_linenumber" name="95" href="#95">95</a>      Object valueReference = delegate.get(makeKeyReferenceAware(key));
<a class="jxr_linenumber" name="96" href="#96">96</a>      <strong class="jxr_keyword">return</strong> valueReference == <strong class="jxr_keyword">null</strong>
<a class="jxr_linenumber" name="97" href="#97">97</a>          ? <strong class="jxr_keyword">null</strong>
<a class="jxr_linenumber" name="98" href="#98">98</a>          : (V) dereferenceValue(valueReference);
<a class="jxr_linenumber" name="99" href="#99">99</a>    }
<a class="jxr_linenumber" name="100" href="#100">100</a> 
<a class="jxr_linenumber" name="101" href="#101">101</a>   <strong class="jxr_keyword">public</strong> V get(<strong class="jxr_keyword">final</strong> Object key) {
<a class="jxr_linenumber" name="102" href="#102">102</a>     ensureNotNull(key);
<a class="jxr_linenumber" name="103" href="#103">103</a>     <strong class="jxr_keyword">return</strong> internalGet((K) key);
<a class="jxr_linenumber" name="104" href="#104">104</a>   }
<a class="jxr_linenumber" name="105" href="#105">105</a> 
<a class="jxr_linenumber" name="106" href="#106">106</a>   V execute(<a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">Strategy</a> strategy, K key, V value) {
<a class="jxr_linenumber" name="107" href="#107">107</a>     ensureNotNull(key, value);
<a class="jxr_linenumber" name="108" href="#108">108</a>     Object keyReference = referenceKey(key);
<a class="jxr_linenumber" name="109" href="#109">109</a>     Object valueReference = strategy.execute(
<a class="jxr_linenumber" name="110" href="#110">110</a>       <strong class="jxr_keyword">this</strong>,
<a class="jxr_linenumber" name="111" href="#111">111</a>       keyReference,
<a class="jxr_linenumber" name="112" href="#112">112</a>       referenceValue(keyReference, value)
<a class="jxr_linenumber" name="113" href="#113">113</a>     );
<a class="jxr_linenumber" name="114" href="#114">114</a>     <strong class="jxr_keyword">return</strong> valueReference == <strong class="jxr_keyword">null</strong> ? <strong class="jxr_keyword">null</strong>
<a class="jxr_linenumber" name="115" href="#115">115</a>         : (V) dereferenceValue(valueReference);
<a class="jxr_linenumber" name="116" href="#116">116</a>   }
<a class="jxr_linenumber" name="117" href="#117">117</a> 
<a class="jxr_linenumber" name="118" href="#118">118</a>   <strong class="jxr_keyword">public</strong> V put(K key, V value) {
<a class="jxr_linenumber" name="119" href="#119">119</a>     <strong class="jxr_keyword">return</strong> execute(putStrategy(), key, value);
<a class="jxr_linenumber" name="120" href="#120">120</a>   }
<a class="jxr_linenumber" name="121" href="#121">121</a> 
<a class="jxr_linenumber" name="122" href="#122">122</a>   <strong class="jxr_keyword">public</strong> V remove(Object key) {
<a class="jxr_linenumber" name="123" href="#123">123</a>     ensureNotNull(key);
<a class="jxr_linenumber" name="124" href="#124">124</a>     Object referenceAwareKey = makeKeyReferenceAware(key);
<a class="jxr_linenumber" name="125" href="#125">125</a>     Object valueReference = delegate.remove(referenceAwareKey);
<a class="jxr_linenumber" name="126" href="#126">126</a>     <strong class="jxr_keyword">return</strong> valueReference == <strong class="jxr_keyword">null</strong> ? <strong class="jxr_keyword">null</strong>
<a class="jxr_linenumber" name="127" href="#127">127</a>         : (V) dereferenceValue(valueReference);
<a class="jxr_linenumber" name="128" href="#128">128</a>   }
<a class="jxr_linenumber" name="129" href="#129">129</a> 
<a class="jxr_linenumber" name="130" href="#130">130</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> size() {
<a class="jxr_linenumber" name="131" href="#131">131</a>     <strong class="jxr_keyword">return</strong> delegate.size();
<a class="jxr_linenumber" name="132" href="#132">132</a>   }
<a class="jxr_linenumber" name="133" href="#133">133</a> 
<a class="jxr_linenumber" name="134" href="#134">134</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isEmpty() {
<a class="jxr_linenumber" name="135" href="#135">135</a>     <strong class="jxr_keyword">return</strong> delegate.isEmpty();
<a class="jxr_linenumber" name="136" href="#136">136</a>   }
<a class="jxr_linenumber" name="137" href="#137">137</a> 
<a class="jxr_linenumber" name="138" href="#138">138</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> containsKey(Object key) {
<a class="jxr_linenumber" name="139" href="#139">139</a>     ensureNotNull(key);
<a class="jxr_linenumber" name="140" href="#140">140</a>     Object referenceAwareKey = makeKeyReferenceAware(key);
<a class="jxr_linenumber" name="141" href="#141">141</a>     <strong class="jxr_keyword">return</strong> delegate.containsKey(referenceAwareKey);
<a class="jxr_linenumber" name="142" href="#142">142</a>   }
<a class="jxr_linenumber" name="143" href="#143">143</a> 
<a class="jxr_linenumber" name="144" href="#144">144</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> containsValue(Object value) {
<a class="jxr_linenumber" name="145" href="#145">145</a>     ensureNotNull(value);
<a class="jxr_linenumber" name="146" href="#146">146</a>     <strong class="jxr_keyword">for</strong> (Object valueReference : delegate.values()) {
<a class="jxr_linenumber" name="147" href="#147">147</a>       <strong class="jxr_keyword">if</strong> (value.equals(dereferenceValue(valueReference))) {
<a class="jxr_linenumber" name="148" href="#148">148</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="149" href="#149">149</a>       }
<a class="jxr_linenumber" name="150" href="#150">150</a>     }
<a class="jxr_linenumber" name="151" href="#151">151</a>     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="152" href="#152">152</a>   }
<a class="jxr_linenumber" name="153" href="#153">153</a> 
<a class="jxr_linenumber" name="154" href="#154">154</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> putAll(Map&lt;? <strong class="jxr_keyword">extends</strong> K, ? <strong class="jxr_keyword">extends</strong> V&gt; t) {
<a class="jxr_linenumber" name="155" href="#155">155</a>     <strong class="jxr_keyword">for</strong> (Map.Entry&lt;? <strong class="jxr_keyword">extends</strong> K, ? <strong class="jxr_keyword">extends</strong> V&gt; entry : t.entrySet()) {
<a class="jxr_linenumber" name="156" href="#156">156</a>       put(entry.getKey(), entry.getValue());
<a class="jxr_linenumber" name="157" href="#157">157</a>     }
<a class="jxr_linenumber" name="158" href="#158">158</a>   }
<a class="jxr_linenumber" name="159" href="#159">159</a> 
<a class="jxr_linenumber" name="160" href="#160">160</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> clear() {
<a class="jxr_linenumber" name="161" href="#161">161</a>     delegate.clear();
<a class="jxr_linenumber" name="162" href="#162">162</a>   }
<a class="jxr_linenumber" name="163" href="#163">163</a> 
<a class="jxr_linenumber" name="164" href="#164">164</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="165" href="#165">165</a> <em class="jxr_javadoccomment">   * Returns an unmodifiable set view of the keys in this map. As this method</em>
<a class="jxr_linenumber" name="166" href="#166">166</a> <em class="jxr_javadoccomment">   * creates a defensive copy, the performance is O(n).</em>
<a class="jxr_linenumber" name="167" href="#167">167</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="168" href="#168">168</a>   <strong class="jxr_keyword">public</strong> Set&lt;K&gt; keySet() {
<a class="jxr_linenumber" name="169" href="#169">169</a>     <strong class="jxr_keyword">return</strong> Collections.unmodifiableSet(
<a class="jxr_linenumber" name="170" href="#170">170</a>         dereferenceKeySet(delegate.keySet()));
<a class="jxr_linenumber" name="171" href="#171">171</a>   }
<a class="jxr_linenumber" name="172" href="#172">172</a> 
<a class="jxr_linenumber" name="173" href="#173">173</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="174" href="#174">174</a> <em class="jxr_javadoccomment">   * Returns an unmodifiable set view of the values in this map. As this</em>
<a class="jxr_linenumber" name="175" href="#175">175</a> <em class="jxr_javadoccomment">   * method creates a defensive copy, the performance is O(n).</em>
<a class="jxr_linenumber" name="176" href="#176">176</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="177" href="#177">177</a>   <strong class="jxr_keyword">public</strong> Collection&lt;V&gt; values() {
<a class="jxr_linenumber" name="178" href="#178">178</a>     <strong class="jxr_keyword">return</strong> Collections.unmodifiableCollection(
<a class="jxr_linenumber" name="179" href="#179">179</a>         dereferenceValues(delegate.values()));
<a class="jxr_linenumber" name="180" href="#180">180</a>   }
<a class="jxr_linenumber" name="181" href="#181">181</a> 
<a class="jxr_linenumber" name="182" href="#182">182</a>   <strong class="jxr_keyword">public</strong> V putIfAbsent(K key, V value) {
<a class="jxr_linenumber" name="183" href="#183">183</a>     <em class="jxr_comment">// TODO (crazybob) if the value has been gc'ed but the entry hasn't been</em>
<a class="jxr_linenumber" name="184" href="#184">184</a>     <em class="jxr_comment">// cleaned up yet, this put will fail.</em>
<a class="jxr_linenumber" name="185" href="#185">185</a>     <strong class="jxr_keyword">return</strong> execute(putIfAbsentStrategy(), key, value);
<a class="jxr_linenumber" name="186" href="#186">186</a>   }
<a class="jxr_linenumber" name="187" href="#187">187</a> 
<a class="jxr_linenumber" name="188" href="#188">188</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> remove(Object key, Object value) {
<a class="jxr_linenumber" name="189" href="#189">189</a>     ensureNotNull(key, value);
<a class="jxr_linenumber" name="190" href="#190">190</a>     Object referenceAwareKey = makeKeyReferenceAware(key);
<a class="jxr_linenumber" name="191" href="#191">191</a>     Object referenceAwareValue = makeValueReferenceAware(value);
<a class="jxr_linenumber" name="192" href="#192">192</a>     <strong class="jxr_keyword">return</strong> delegate.remove(referenceAwareKey, referenceAwareValue);
<a class="jxr_linenumber" name="193" href="#193">193</a>   }
<a class="jxr_linenumber" name="194" href="#194">194</a> 
<a class="jxr_linenumber" name="195" href="#195">195</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> replace(K key, V oldValue, V newValue) {
<a class="jxr_linenumber" name="196" href="#196">196</a>     ensureNotNull(key, oldValue, newValue);
<a class="jxr_linenumber" name="197" href="#197">197</a>     Object keyReference = referenceKey(key);
<a class="jxr_linenumber" name="198" href="#198">198</a> 
<a class="jxr_linenumber" name="199" href="#199">199</a>     Object referenceAwareOldValue = makeValueReferenceAware(oldValue);
<a class="jxr_linenumber" name="200" href="#200">200</a>     <strong class="jxr_keyword">return</strong> delegate.replace(
<a class="jxr_linenumber" name="201" href="#201">201</a>       keyReference,
<a class="jxr_linenumber" name="202" href="#202">202</a>       referenceAwareOldValue,
<a class="jxr_linenumber" name="203" href="#203">203</a>       referenceValue(keyReference, newValue)
<a class="jxr_linenumber" name="204" href="#204">204</a>     );
<a class="jxr_linenumber" name="205" href="#205">205</a>   }
<a class="jxr_linenumber" name="206" href="#206">206</a> 
<a class="jxr_linenumber" name="207" href="#207">207</a>   <strong class="jxr_keyword">public</strong> V replace(K key, V value) {
<a class="jxr_linenumber" name="208" href="#208">208</a>     <em class="jxr_comment">// TODO (crazybob) if the value has been gc'ed but the entry hasn't been</em>
<a class="jxr_linenumber" name="209" href="#209">209</a>     <em class="jxr_comment">// cleaned up yet, this will succeed when it probably shouldn't.</em>
<a class="jxr_linenumber" name="210" href="#210">210</a>     <strong class="jxr_keyword">return</strong> execute(replaceStrategy(), key, value);
<a class="jxr_linenumber" name="211" href="#211">211</a>   }
<a class="jxr_linenumber" name="212" href="#212">212</a> 
<a class="jxr_linenumber" name="213" href="#213">213</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="214" href="#214">214</a> <em class="jxr_javadoccomment">   * Returns an unmodifiable set view of the entries in this map. As this</em>
<a class="jxr_linenumber" name="215" href="#215">215</a> <em class="jxr_javadoccomment">   * method creates a defensive copy, the performance is O(n).</em>
<a class="jxr_linenumber" name="216" href="#216">216</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="217" href="#217">217</a>   <strong class="jxr_keyword">public</strong> Set&lt;Map.Entry&lt;K, V&gt;&gt; entrySet() {
<a class="jxr_linenumber" name="218" href="#218">218</a>     Set&lt;Map.Entry&lt;K, V&gt;&gt; entrySet = <strong class="jxr_keyword">new</strong> HashSet&lt;Map.Entry&lt;K, V&gt;&gt;();
<a class="jxr_linenumber" name="219" href="#219">219</a>     <strong class="jxr_keyword">for</strong> (Map.Entry&lt;Object, Object&gt; entry : delegate.entrySet()) {
<a class="jxr_linenumber" name="220" href="#220">220</a>       Map.Entry&lt;K, V&gt; dereferenced = dereferenceEntry(entry);
<a class="jxr_linenumber" name="221" href="#221">221</a>       <strong class="jxr_keyword">if</strong> (dereferenced != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="222" href="#222">222</a>         entrySet.add(dereferenced);
<a class="jxr_linenumber" name="223" href="#223">223</a>       }
<a class="jxr_linenumber" name="224" href="#224">224</a>     }
<a class="jxr_linenumber" name="225" href="#225">225</a>     <strong class="jxr_keyword">return</strong> Collections.unmodifiableSet(entrySet);
<a class="jxr_linenumber" name="226" href="#226">226</a>   }
<a class="jxr_linenumber" name="227" href="#227">227</a> 
<a class="jxr_linenumber" name="228" href="#228">228</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="229" href="#229">229</a> <em class="jxr_javadoccomment">   * Dereferences an entry. Returns null if the key or value has been gc'ed.</em>
<a class="jxr_linenumber" name="230" href="#230">230</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="231" href="#231">231</a>   <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">Entry</a> dereferenceEntry(Map.Entry&lt;Object, Object&gt; entry) {
<a class="jxr_linenumber" name="232" href="#232">232</a>     K key = dereferenceKey(entry.getKey());
<a class="jxr_linenumber" name="233" href="#233">233</a>     V value = dereferenceValue(entry.getValue());
<a class="jxr_linenumber" name="234" href="#234">234</a>     <strong class="jxr_keyword">return</strong> (key == <strong class="jxr_keyword">null</strong> || value == <strong class="jxr_keyword">null</strong>)
<a class="jxr_linenumber" name="235" href="#235">235</a>         ? <strong class="jxr_keyword">null</strong>
<a class="jxr_linenumber" name="236" href="#236">236</a>         : <strong class="jxr_keyword">new</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">Entry</a>(key, value);
<a class="jxr_linenumber" name="237" href="#237">237</a>   }
<a class="jxr_linenumber" name="238" href="#238">238</a> 
<a class="jxr_linenumber" name="239" href="#239">239</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="240" href="#240">240</a> <em class="jxr_javadoccomment">   * Creates a reference for a key.</em>
<a class="jxr_linenumber" name="241" href="#241">241</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="242" href="#242">242</a>   Object referenceKey(K key) {
<a class="jxr_linenumber" name="243" href="#243">243</a>     <strong class="jxr_keyword">switch</strong> (keyReferenceType) {
<a class="jxr_linenumber" name="244" href="#244">244</a>       <strong class="jxr_keyword">case</strong> STRONG: <strong class="jxr_keyword">return</strong> key;
<a class="jxr_linenumber" name="245" href="#245">245</a>       <strong class="jxr_keyword">case</strong> SOFT: <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">SoftKeyReference</a>(key);
<a class="jxr_linenumber" name="246" href="#246">246</a>       <strong class="jxr_keyword">case</strong> WEAK: <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">WeakKeyReference</a>(key);
<a class="jxr_linenumber" name="247" href="#247">247</a>       <strong class="jxr_keyword">default</strong>: <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> AssertionError();
<a class="jxr_linenumber" name="248" href="#248">248</a>     }
<a class="jxr_linenumber" name="249" href="#249">249</a>   }
<a class="jxr_linenumber" name="250" href="#250">250</a> 
<a class="jxr_linenumber" name="251" href="#251">251</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="252" href="#252">252</a> <em class="jxr_javadoccomment">   * Converts a reference to a key.</em>
<a class="jxr_linenumber" name="253" href="#253">253</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="254" href="#254">254</a>   K dereferenceKey(Object o) {
<a class="jxr_linenumber" name="255" href="#255">255</a>     <strong class="jxr_keyword">return</strong> (K) dereference(keyReferenceType, o);
<a class="jxr_linenumber" name="256" href="#256">256</a>   }
<a class="jxr_linenumber" name="257" href="#257">257</a> 
<a class="jxr_linenumber" name="258" href="#258">258</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="259" href="#259">259</a> <em class="jxr_javadoccomment">   * Converts a reference to a value.</em>
<a class="jxr_linenumber" name="260" href="#260">260</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="261" href="#261">261</a>   V dereferenceValue(Object o) {
<a class="jxr_linenumber" name="262" href="#262">262</a>     <strong class="jxr_keyword">return</strong> (V) dereference(valueReferenceType, o);
<a class="jxr_linenumber" name="263" href="#263">263</a>   }
<a class="jxr_linenumber" name="264" href="#264">264</a> 
<a class="jxr_linenumber" name="265" href="#265">265</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="266" href="#266">266</a> <em class="jxr_javadoccomment">   * Returns the refererent for reference given its reference type.</em>
<a class="jxr_linenumber" name="267" href="#267">267</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="268" href="#268">268</a>   Object dereference(<a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceType.html">ReferenceType</a> referenceType, Object reference) {
<a class="jxr_linenumber" name="269" href="#269">269</a>     <strong class="jxr_keyword">return</strong> referenceType == STRONG ? reference : ((Reference) reference).get();
<a class="jxr_linenumber" name="270" href="#270">270</a>   }
<a class="jxr_linenumber" name="271" href="#271">271</a> 
<a class="jxr_linenumber" name="272" href="#272">272</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="273" href="#273">273</a> <em class="jxr_javadoccomment">   * Creates a reference for a value.</em>
<a class="jxr_linenumber" name="274" href="#274">274</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="275" href="#275">275</a>   Object referenceValue(Object keyReference, Object value) {
<a class="jxr_linenumber" name="276" href="#276">276</a>     <strong class="jxr_keyword">switch</strong> (valueReferenceType) {
<a class="jxr_linenumber" name="277" href="#277">277</a>       <strong class="jxr_keyword">case</strong> STRONG: <strong class="jxr_keyword">return</strong> value;
<a class="jxr_linenumber" name="278" href="#278">278</a>       <strong class="jxr_keyword">case</strong> SOFT: <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">SoftValueReference</a>(keyReference, value);
<a class="jxr_linenumber" name="279" href="#279">279</a>       <strong class="jxr_keyword">case</strong> WEAK: <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">WeakValueReference</a>(keyReference, value);
<a class="jxr_linenumber" name="280" href="#280">280</a>       <strong class="jxr_keyword">default</strong>: <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> AssertionError();
<a class="jxr_linenumber" name="281" href="#281">281</a>     }
<a class="jxr_linenumber" name="282" href="#282">282</a>   }
<a class="jxr_linenumber" name="283" href="#283">283</a> 
<a class="jxr_linenumber" name="284" href="#284">284</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="285" href="#285">285</a> <em class="jxr_javadoccomment">   * Dereferences a set of key references.</em>
<a class="jxr_linenumber" name="286" href="#286">286</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="287" href="#287">287</a>   Set&lt;K&gt; dereferenceKeySet(Set keyReferences) {
<a class="jxr_linenumber" name="288" href="#288">288</a>     <strong class="jxr_keyword">return</strong> keyReferenceType == STRONG
<a class="jxr_linenumber" name="289" href="#289">289</a>         ? keyReferences
<a class="jxr_linenumber" name="290" href="#290">290</a>         : dereferenceCollection(keyReferenceType, keyReferences, <strong class="jxr_keyword">new</strong> HashSet());
<a class="jxr_linenumber" name="291" href="#291">291</a>   }
<a class="jxr_linenumber" name="292" href="#292">292</a> 
<a class="jxr_linenumber" name="293" href="#293">293</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="294" href="#294">294</a> <em class="jxr_javadoccomment">   * Dereferences a collection of value references.</em>
<a class="jxr_linenumber" name="295" href="#295">295</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="296" href="#296">296</a>   Collection&lt;V&gt; dereferenceValues(Collection valueReferences) {
<a class="jxr_linenumber" name="297" href="#297">297</a>     <strong class="jxr_keyword">return</strong> valueReferenceType == STRONG
<a class="jxr_linenumber" name="298" href="#298">298</a>         ? valueReferences
<a class="jxr_linenumber" name="299" href="#299">299</a>         : dereferenceCollection(valueReferenceType, valueReferences,
<a class="jxr_linenumber" name="300" href="#300">300</a>             <strong class="jxr_keyword">new</strong> ArrayList(valueReferences.size()));
<a class="jxr_linenumber" name="301" href="#301">301</a>   }
<a class="jxr_linenumber" name="302" href="#302">302</a> 
<a class="jxr_linenumber" name="303" href="#303">303</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="304" href="#304">304</a> <em class="jxr_javadoccomment">   * Wraps key so it can be compared to a referenced key for equality.</em>
<a class="jxr_linenumber" name="305" href="#305">305</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="306" href="#306">306</a>   Object makeKeyReferenceAware(Object o) {
<a class="jxr_linenumber" name="307" href="#307">307</a>     <strong class="jxr_keyword">return</strong> keyReferenceType == STRONG ? o : <strong class="jxr_keyword">new</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">KeyReferenceAwareWrapper</a>(o);
<a class="jxr_linenumber" name="308" href="#308">308</a>   }
<a class="jxr_linenumber" name="309" href="#309">309</a> 
<a class="jxr_linenumber" name="310" href="#310">310</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="311" href="#311">311</a> <em class="jxr_javadoccomment">   * Wraps value so it can be compared to a referenced value for equality.</em>
<a class="jxr_linenumber" name="312" href="#312">312</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="313" href="#313">313</a>   Object makeValueReferenceAware(Object o) {
<a class="jxr_linenumber" name="314" href="#314">314</a>     <strong class="jxr_keyword">return</strong> valueReferenceType == STRONG ? o : <strong class="jxr_keyword">new</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">ReferenceAwareWrapper</a>(o);
<a class="jxr_linenumber" name="315" href="#315">315</a>   }
<a class="jxr_linenumber" name="316" href="#316">316</a> 
<a class="jxr_linenumber" name="317" href="#317">317</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="318" href="#318">318</a> <em class="jxr_javadoccomment">   * Dereferences elements in {@code in} using</em>
<a class="jxr_linenumber" name="319" href="#319">319</a> <em class="jxr_javadoccomment">   * {@code referenceType} and puts them in {@code out}. Returns</em>
<a class="jxr_linenumber" name="320" href="#320">320</a> <em class="jxr_javadoccomment">   * {@code out}.</em>
<a class="jxr_linenumber" name="321" href="#321">321</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="322" href="#322">322</a>   &lt;T <strong class="jxr_keyword">extends</strong> Collection&lt;Object&gt;&gt; T dereferenceCollection(
<a class="jxr_linenumber" name="323" href="#323">323</a>       <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceType.html">ReferenceType</a> referenceType, T in, T out) {
<a class="jxr_linenumber" name="324" href="#324">324</a>     <strong class="jxr_keyword">for</strong> (Object reference : in) {
<a class="jxr_linenumber" name="325" href="#325">325</a>       out.add(dereference(referenceType, reference));
<a class="jxr_linenumber" name="326" href="#326">326</a>     }
<a class="jxr_linenumber" name="327" href="#327">327</a>     <strong class="jxr_keyword">return</strong> out;
<a class="jxr_linenumber" name="328" href="#328">328</a>   }
<a class="jxr_linenumber" name="329" href="#329">329</a> 
<a class="jxr_linenumber" name="330" href="#330">330</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="331" href="#331">331</a> <em class="jxr_javadoccomment">   * Marker interface to differentiate external and internal references.</em>
<a class="jxr_linenumber" name="332" href="#332">332</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="333" href="#333">333</a>   <strong class="jxr_keyword">interface</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">InternalReference</a> {}
<a class="jxr_linenumber" name="334" href="#334">334</a> 
<a class="jxr_linenumber" name="335" href="#335">335</a>   <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">int</strong> keyHashCode(Object key) {
<a class="jxr_linenumber" name="336" href="#336">336</a>     <strong class="jxr_keyword">return</strong> System.identityHashCode(key);
<a class="jxr_linenumber" name="337" href="#337">337</a>   }
<a class="jxr_linenumber" name="338" href="#338">338</a> 
<a class="jxr_linenumber" name="339" href="#339">339</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="340" href="#340">340</a> <em class="jxr_javadoccomment">   * Tests weak and soft references for identity equality. Compares references</em>
<a class="jxr_linenumber" name="341" href="#341">341</a> <em class="jxr_javadoccomment">   * to other references and wrappers. If o is a reference, this returns true</em>
<a class="jxr_linenumber" name="342" href="#342">342</a> <em class="jxr_javadoccomment">   * if r == o or if r and o reference the same non null object. If o is a</em>
<a class="jxr_linenumber" name="343" href="#343">343</a> <em class="jxr_javadoccomment">   * wrapper, this returns true if r's referent is identical to the wrapped</em>
<a class="jxr_linenumber" name="344" href="#344">344</a> <em class="jxr_javadoccomment">   * object.</em>
<a class="jxr_linenumber" name="345" href="#345">345</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="346" href="#346">346</a>   <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> referenceEquals(Reference r, Object o) {
<a class="jxr_linenumber" name="347" href="#347">347</a>     <em class="jxr_comment">// compare reference to reference.</em>
<a class="jxr_linenumber" name="348" href="#348">348</a>     <strong class="jxr_keyword">if</strong> (o instanceof InternalReference) {
<a class="jxr_linenumber" name="349" href="#349">349</a>       <em class="jxr_comment">// are they the same reference? used in cleanup.</em>
<a class="jxr_linenumber" name="350" href="#350">350</a>       <strong class="jxr_keyword">if</strong> (o == r) {
<a class="jxr_linenumber" name="351" href="#351">351</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="352" href="#352">352</a>       }
<a class="jxr_linenumber" name="353" href="#353">353</a> 
<a class="jxr_linenumber" name="354" href="#354">354</a>       <em class="jxr_comment">// do they reference identical values? used in conditional puts.</em>
<a class="jxr_linenumber" name="355" href="#355">355</a>       Object referent = ((Reference) o).get();
<a class="jxr_linenumber" name="356" href="#356">356</a>       <strong class="jxr_keyword">return</strong> referent != <strong class="jxr_keyword">null</strong> &amp;&amp; referent == r.get();
<a class="jxr_linenumber" name="357" href="#357">357</a>     }
<a class="jxr_linenumber" name="358" href="#358">358</a> 
<a class="jxr_linenumber" name="359" href="#359">359</a>     <em class="jxr_comment">// is the wrapped object identical to the referent? used in lookups.</em>
<a class="jxr_linenumber" name="360" href="#360">360</a>     <strong class="jxr_keyword">return</strong> ((ReferenceAwareWrapper) o).unwrap() == r.get();
<a class="jxr_linenumber" name="361" href="#361">361</a>   }
<a class="jxr_linenumber" name="362" href="#362">362</a> 
<a class="jxr_linenumber" name="363" href="#363">363</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="364" href="#364">364</a> <em class="jxr_javadoccomment">   * Big hack. Used to compare keys and values to referenced keys and values</em>
<a class="jxr_linenumber" name="365" href="#365">365</a> <em class="jxr_javadoccomment">   * without creating more references.</em>
<a class="jxr_linenumber" name="366" href="#366">366</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="367" href="#367">367</a>   <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">ReferenceAwareWrapper</a> {
<a class="jxr_linenumber" name="368" href="#368">368</a> 
<a class="jxr_linenumber" name="369" href="#369">369</a>     <strong class="jxr_keyword">final</strong> Object wrapped;
<a class="jxr_linenumber" name="370" href="#370">370</a> 
<a class="jxr_linenumber" name="371" href="#371">371</a>     <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">ReferenceAwareWrapper</a>(Object wrapped) {
<a class="jxr_linenumber" name="372" href="#372">372</a>       <strong class="jxr_keyword">this</strong>.wrapped = wrapped;
<a class="jxr_linenumber" name="373" href="#373">373</a>     }
<a class="jxr_linenumber" name="374" href="#374">374</a> 
<a class="jxr_linenumber" name="375" href="#375">375</a>     Object unwrap() {
<a class="jxr_linenumber" name="376" href="#376">376</a>       <strong class="jxr_keyword">return</strong> wrapped;
<a class="jxr_linenumber" name="377" href="#377">377</a>     }
<a class="jxr_linenumber" name="378" href="#378">378</a> 
<a class="jxr_linenumber" name="379" href="#379">379</a>     @Override
<a class="jxr_linenumber" name="380" href="#380">380</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> hashCode() {
<a class="jxr_linenumber" name="381" href="#381">381</a>       <strong class="jxr_keyword">return</strong> wrapped.hashCode();
<a class="jxr_linenumber" name="382" href="#382">382</a>     }
<a class="jxr_linenumber" name="383" href="#383">383</a> 
<a class="jxr_linenumber" name="384" href="#384">384</a>     @Override
<a class="jxr_linenumber" name="385" href="#385">385</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> equals(Object obj) {
<a class="jxr_linenumber" name="386" href="#386">386</a>       <em class="jxr_comment">// defer to reference's equals() logic.</em>
<a class="jxr_linenumber" name="387" href="#387">387</a>       <strong class="jxr_keyword">return</strong> obj != <strong class="jxr_keyword">null</strong> &amp;&amp; obj.equals(<strong class="jxr_keyword">this</strong>);
<a class="jxr_linenumber" name="388" href="#388">388</a>     }
<a class="jxr_linenumber" name="389" href="#389">389</a>   }
<a class="jxr_linenumber" name="390" href="#390">390</a> 
<a class="jxr_linenumber" name="391" href="#391">391</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="392" href="#392">392</a> <em class="jxr_javadoccomment">   * Used for keys. Overrides hash code to use identity hash code.</em>
<a class="jxr_linenumber" name="393" href="#393">393</a> <em class="jxr_javadoccomment">   */</em>
<a class="jxr_linenumber" name="394" href="#394">394</a>   <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">KeyReferenceAwareWrapper</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">ReferenceAwareWrapper</a> {
<a class="jxr_linenumber" name="395" href="#395">395</a> 
<a class="jxr_linenumber" name="396" href="#396">396</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">KeyReferenceAwareWrapper</a>(Object wrapped) {
<a class="jxr_linenumber" name="397" href="#397">397</a>       <strong class="jxr_keyword">super</strong>(wrapped);
<a class="jxr_linenumber" name="398" href="#398">398</a>     }
<a class="jxr_linenumber" name="399" href="#399">399</a> 
<a class="jxr_linenumber" name="400" href="#400">400</a>     @Override
<a class="jxr_linenumber" name="401" href="#401">401</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> hashCode() {
<a class="jxr_linenumber" name="402" href="#402">402</a>       <strong class="jxr_keyword">return</strong> System.identityHashCode(wrapped);
<a class="jxr_linenumber" name="403" href="#403">403</a>     }
<a class="jxr_linenumber" name="404" href="#404">404</a> 
<a class="jxr_linenumber" name="405" href="#405">405</a>     @Override
<a class="jxr_linenumber" name="406" href="#406">406</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> equals(Object obj) {
<a class="jxr_linenumber" name="407" href="#407">407</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">super</strong>.equals(obj);
<a class="jxr_linenumber" name="408" href="#408">408</a>     }
<a class="jxr_linenumber" name="409" href="#409">409</a>   }
<a class="jxr_linenumber" name="410" href="#410">410</a> 
<a class="jxr_linenumber" name="411" href="#411">411</a>   <strong class="jxr_keyword">class</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">SoftKeyReference</a> <strong class="jxr_keyword">extends</strong> FinalizableSoftReference&lt;Object&gt;
<a class="jxr_linenumber" name="412" href="#412">412</a>       <strong class="jxr_keyword">implements</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">InternalReference</a> {
<a class="jxr_linenumber" name="413" href="#413">413</a> 
<a class="jxr_linenumber" name="414" href="#414">414</a>     <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> hashCode;
<a class="jxr_linenumber" name="415" href="#415">415</a> 
<a class="jxr_linenumber" name="416" href="#416">416</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">SoftKeyReference</a>(Object key) {
<a class="jxr_linenumber" name="417" href="#417">417</a>       <strong class="jxr_keyword">super</strong>(key, referenceQueue);
<a class="jxr_linenumber" name="418" href="#418">418</a>       <strong class="jxr_keyword">this</strong>.hashCode = keyHashCode(key);
<a class="jxr_linenumber" name="419" href="#419">419</a>     }
<a class="jxr_linenumber" name="420" href="#420">420</a> 
<a class="jxr_linenumber" name="421" href="#421">421</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> finalizeReferent() {
<a class="jxr_linenumber" name="422" href="#422">422</a>       delegate.remove(<strong class="jxr_keyword">this</strong>);
<a class="jxr_linenumber" name="423" href="#423">423</a>     }
<a class="jxr_linenumber" name="424" href="#424">424</a> 
<a class="jxr_linenumber" name="425" href="#425">425</a>     @Override <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> hashCode() {
<a class="jxr_linenumber" name="426" href="#426">426</a>       <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.hashCode;
<a class="jxr_linenumber" name="427" href="#427">427</a>     }
<a class="jxr_linenumber" name="428" href="#428">428</a> 
<a class="jxr_linenumber" name="429" href="#429">429</a>     @Override <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> equals(Object o) {
<a class="jxr_linenumber" name="430" href="#430">430</a>       <strong class="jxr_keyword">return</strong> referenceEquals(<strong class="jxr_keyword">this</strong>, o);
<a class="jxr_linenumber" name="431" href="#431">431</a>     }
<a class="jxr_linenumber" name="432" href="#432">432</a>   }
<a class="jxr_linenumber" name="433" href="#433">433</a> 
<a class="jxr_linenumber" name="434" href="#434">434</a>   <strong class="jxr_keyword">class</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">WeakKeyReference</a> <strong class="jxr_keyword">extends</strong> FinalizableWeakReference&lt;Object&gt;
<a class="jxr_linenumber" name="435" href="#435">435</a>       <strong class="jxr_keyword">implements</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">InternalReference</a> {
<a class="jxr_linenumber" name="436" href="#436">436</a> 
<a class="jxr_linenumber" name="437" href="#437">437</a>     <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> hashCode;
<a class="jxr_linenumber" name="438" href="#438">438</a> 
<a class="jxr_linenumber" name="439" href="#439">439</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">WeakKeyReference</a>(Object key) {
<a class="jxr_linenumber" name="440" href="#440">440</a>       <strong class="jxr_keyword">super</strong>(key, referenceQueue);
<a class="jxr_linenumber" name="441" href="#441">441</a>       <strong class="jxr_keyword">this</strong>.hashCode = keyHashCode(key);
<a class="jxr_linenumber" name="442" href="#442">442</a>     }
<a class="jxr_linenumber" name="443" href="#443">443</a> 
<a class="jxr_linenumber" name="444" href="#444">444</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> finalizeReferent() {
<a class="jxr_linenumber" name="445" href="#445">445</a>       delegate.remove(<strong class="jxr_keyword">this</strong>);
<a class="jxr_linenumber" name="446" href="#446">446</a>     }
<a class="jxr_linenumber" name="447" href="#447">447</a> 
<a class="jxr_linenumber" name="448" href="#448">448</a>     @Override <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> hashCode() {
<a class="jxr_linenumber" name="449" href="#449">449</a>       <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.hashCode;
<a class="jxr_linenumber" name="450" href="#450">450</a>     }
<a class="jxr_linenumber" name="451" href="#451">451</a> 
<a class="jxr_linenumber" name="452" href="#452">452</a>     @Override <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> equals(Object o) {
<a class="jxr_linenumber" name="453" href="#453">453</a>       <strong class="jxr_keyword">return</strong> o != <strong class="jxr_keyword">null</strong> &amp;&amp; referenceEquals(<strong class="jxr_keyword">this</strong>, o);
<a class="jxr_linenumber" name="454" href="#454">454</a>     }
<a class="jxr_linenumber" name="455" href="#455">455</a>   }
<a class="jxr_linenumber" name="456" href="#456">456</a> 
<a class="jxr_linenumber" name="457" href="#457">457</a>   <strong class="jxr_keyword">class</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">SoftValueReference</a> <strong class="jxr_keyword">extends</strong> FinalizableSoftReference&lt;Object&gt;
<a class="jxr_linenumber" name="458" href="#458">458</a>       <strong class="jxr_keyword">implements</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">InternalReference</a> {
<a class="jxr_linenumber" name="459" href="#459">459</a> 
<a class="jxr_linenumber" name="460" href="#460">460</a>     <strong class="jxr_keyword">final</strong> Object keyReference;
<a class="jxr_linenumber" name="461" href="#461">461</a> 
<a class="jxr_linenumber" name="462" href="#462">462</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">SoftValueReference</a>(Object keyReference, Object value) {
<a class="jxr_linenumber" name="463" href="#463">463</a>       <strong class="jxr_keyword">super</strong>(value, referenceQueue);
<a class="jxr_linenumber" name="464" href="#464">464</a>       <strong class="jxr_keyword">this</strong>.keyReference = keyReference;
<a class="jxr_linenumber" name="465" href="#465">465</a>     }
<a class="jxr_linenumber" name="466" href="#466">466</a> 
<a class="jxr_linenumber" name="467" href="#467">467</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> finalizeReferent() {
<a class="jxr_linenumber" name="468" href="#468">468</a>       delegate.remove(keyReference, <strong class="jxr_keyword">this</strong>);
<a class="jxr_linenumber" name="469" href="#469">469</a>     }
<a class="jxr_linenumber" name="470" href="#470">470</a>     
<a class="jxr_linenumber" name="471" href="#471">471</a>     @Override
<a class="jxr_linenumber" name="472" href="#472">472</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> hashCode() {
<a class="jxr_linenumber" name="473" href="#473">473</a>         <strong class="jxr_keyword">final</strong> Object ref = <strong class="jxr_keyword">this</strong>.get();
<a class="jxr_linenumber" name="474" href="#474">474</a>         <strong class="jxr_keyword">return</strong> ref == <strong class="jxr_keyword">null</strong> ? 0 : ref.hashCode();
<a class="jxr_linenumber" name="475" href="#475">475</a>     }
<a class="jxr_linenumber" name="476" href="#476">476</a> 
<a class="jxr_linenumber" name="477" href="#477">477</a>     @Override 
<a class="jxr_linenumber" name="478" href="#478">478</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> equals(Object obj) {
<a class="jxr_linenumber" name="479" href="#479">479</a>       <strong class="jxr_keyword">return</strong> obj != <strong class="jxr_keyword">null</strong> &amp;&amp; referenceEquals(<strong class="jxr_keyword">this</strong>, obj);
<a class="jxr_linenumber" name="480" href="#480">480</a>     }
<a class="jxr_linenumber" name="481" href="#481">481</a>   }
<a class="jxr_linenumber" name="482" href="#482">482</a> 
<a class="jxr_linenumber" name="483" href="#483">483</a>   <strong class="jxr_keyword">class</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">WeakValueReference</a> <strong class="jxr_keyword">extends</strong> FinalizableWeakReference&lt;Object&gt;
<a class="jxr_linenumber" name="484" href="#484">484</a>       <strong class="jxr_keyword">implements</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">InternalReference</a> {
<a class="jxr_linenumber" name="485" href="#485">485</a> 
<a class="jxr_linenumber" name="486" href="#486">486</a>     <strong class="jxr_keyword">final</strong> Object keyReference;
<a class="jxr_linenumber" name="487" href="#487">487</a> 
<a class="jxr_linenumber" name="488" href="#488">488</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">WeakValueReference</a>(Object keyReference, Object value) {
<a class="jxr_linenumber" name="489" href="#489">489</a>       <strong class="jxr_keyword">super</strong>(value, referenceQueue);
<a class="jxr_linenumber" name="490" href="#490">490</a>       <strong class="jxr_keyword">this</strong>.keyReference = keyReference;
<a class="jxr_linenumber" name="491" href="#491">491</a>     }
<a class="jxr_linenumber" name="492" href="#492">492</a> 
<a class="jxr_linenumber" name="493" href="#493">493</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> finalizeReferent() {
<a class="jxr_linenumber" name="494" href="#494">494</a>       delegate.remove(keyReference, <strong class="jxr_keyword">this</strong>);
<a class="jxr_linenumber" name="495" href="#495">495</a>     }
<a class="jxr_linenumber" name="496" href="#496">496</a>     
<a class="jxr_linenumber" name="497" href="#497">497</a>     @Override
<a class="jxr_linenumber" name="498" href="#498">498</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> hashCode() {
<a class="jxr_linenumber" name="499" href="#499">499</a>         <strong class="jxr_keyword">final</strong> Object ref = <strong class="jxr_keyword">this</strong>.get();
<a class="jxr_linenumber" name="500" href="#500">500</a>         <strong class="jxr_keyword">return</strong> ref == <strong class="jxr_keyword">null</strong> ? 0 : ref.hashCode();
<a class="jxr_linenumber" name="501" href="#501">501</a>     }
<a class="jxr_linenumber" name="502" href="#502">502</a> 
<a class="jxr_linenumber" name="503" href="#503">503</a>     @Override
<a class="jxr_linenumber" name="504" href="#504">504</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> equals(Object obj) {
<a class="jxr_linenumber" name="505" href="#505">505</a>       <strong class="jxr_keyword">return</strong> obj != <strong class="jxr_keyword">null</strong> &amp;&amp; referenceEquals(<strong class="jxr_keyword">this</strong>, obj);
<a class="jxr_linenumber" name="506" href="#506">506</a>     }
<a class="jxr_linenumber" name="507" href="#507">507</a>   }
<a class="jxr_linenumber" name="508" href="#508">508</a> 
<a class="jxr_linenumber" name="509" href="#509">509</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">interface</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">Strategy</a> {
<a class="jxr_linenumber" name="510" href="#510">510</a>     <strong class="jxr_keyword">public</strong> Object execute(<a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">ReferenceMap</a> map, Object keyReference,
<a class="jxr_linenumber" name="511" href="#511">511</a>         Object valueReference);
<a class="jxr_linenumber" name="512" href="#512">512</a>   }
<a class="jxr_linenumber" name="513" href="#513">513</a> 
<a class="jxr_linenumber" name="514" href="#514">514</a>   <strong class="jxr_keyword">protected</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">Strategy</a> putStrategy() {
<a class="jxr_linenumber" name="515" href="#515">515</a>     <strong class="jxr_keyword">return</strong> PutStrategy.PUT;
<a class="jxr_linenumber" name="516" href="#516">516</a>   }
<a class="jxr_linenumber" name="517" href="#517">517</a> 
<a class="jxr_linenumber" name="518" href="#518">518</a>   <strong class="jxr_keyword">protected</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">Strategy</a> putIfAbsentStrategy() {
<a class="jxr_linenumber" name="519" href="#519">519</a>     <strong class="jxr_keyword">return</strong> PutStrategy.PUT_IF_ABSENT;
<a class="jxr_linenumber" name="520" href="#520">520</a>   }
<a class="jxr_linenumber" name="521" href="#521">521</a> 
<a class="jxr_linenumber" name="522" href="#522">522</a>   <strong class="jxr_keyword">protected</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">Strategy</a> replaceStrategy() {
<a class="jxr_linenumber" name="523" href="#523">523</a>     <strong class="jxr_keyword">return</strong> PutStrategy.REPLACE;
<a class="jxr_linenumber" name="524" href="#524">524</a>   }
<a class="jxr_linenumber" name="525" href="#525">525</a> 
<a class="jxr_linenumber" name="526" href="#526">526</a>   <strong class="jxr_keyword">protected</strong> enum <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">PutStrategy</a> <strong class="jxr_keyword">implements</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">Strategy</a> {
<a class="jxr_linenumber" name="527" href="#527">527</a>     PUT {
<a class="jxr_linenumber" name="528" href="#528">528</a>       <strong class="jxr_keyword">public</strong> Object execute(<a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">ReferenceMap</a> map, Object keyReference,
<a class="jxr_linenumber" name="529" href="#529">529</a>           Object valueReference) {
<a class="jxr_linenumber" name="530" href="#530">530</a>         <strong class="jxr_keyword">return</strong> map.delegate.put(keyReference, valueReference);
<a class="jxr_linenumber" name="531" href="#531">531</a>       }
<a class="jxr_linenumber" name="532" href="#532">532</a>     },
<a class="jxr_linenumber" name="533" href="#533">533</a> 
<a class="jxr_linenumber" name="534" href="#534">534</a>     REPLACE {
<a class="jxr_linenumber" name="535" href="#535">535</a>       <strong class="jxr_keyword">public</strong> Object execute(<a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">ReferenceMap</a> map, Object keyReference,
<a class="jxr_linenumber" name="536" href="#536">536</a>           Object valueReference) {
<a class="jxr_linenumber" name="537" href="#537">537</a>         <strong class="jxr_keyword">return</strong> map.delegate.replace(keyReference, valueReference);
<a class="jxr_linenumber" name="538" href="#538">538</a>       }
<a class="jxr_linenumber" name="539" href="#539">539</a>     },
<a class="jxr_linenumber" name="540" href="#540">540</a> 
<a class="jxr_linenumber" name="541" href="#541">541</a>     PUT_IF_ABSENT {
<a class="jxr_linenumber" name="542" href="#542">542</a>       <strong class="jxr_keyword">public</strong> Object execute(<a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">ReferenceMap</a> map, Object keyReference,
<a class="jxr_linenumber" name="543" href="#543">543</a>           Object valueReference) {
<a class="jxr_linenumber" name="544" href="#544">544</a>         <strong class="jxr_keyword">return</strong> map.delegate.putIfAbsent(keyReference, valueReference);
<a class="jxr_linenumber" name="545" href="#545">545</a>       }
<a class="jxr_linenumber" name="546" href="#546">546</a>     };
<a class="jxr_linenumber" name="547" href="#547">547</a>   };
<a class="jxr_linenumber" name="548" href="#548">548</a> 
<a class="jxr_linenumber" name="549" href="#549">549</a> 
<a class="jxr_linenumber" name="550" href="#550">550</a>   <strong class="jxr_keyword">class</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">Entry</a> <strong class="jxr_keyword">implements</strong> Map.Entry&lt;K, V&gt; {
<a class="jxr_linenumber" name="551" href="#551">551</a> 
<a class="jxr_linenumber" name="552" href="#552">552</a>     <strong class="jxr_keyword">final</strong> K key;
<a class="jxr_linenumber" name="553" href="#553">553</a>     <strong class="jxr_keyword">final</strong> V value;
<a class="jxr_linenumber" name="554" href="#554">554</a> 
<a class="jxr_linenumber" name="555" href="#555">555</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">Entry</a>(K key, V value) {
<a class="jxr_linenumber" name="556" href="#556">556</a>       <strong class="jxr_keyword">this</strong>.key = key;
<a class="jxr_linenumber" name="557" href="#557">557</a>       <strong class="jxr_keyword">this</strong>.value = value;
<a class="jxr_linenumber" name="558" href="#558">558</a>     }
<a class="jxr_linenumber" name="559" href="#559">559</a> 
<a class="jxr_linenumber" name="560" href="#560">560</a>     <strong class="jxr_keyword">public</strong> K getKey() {
<a class="jxr_linenumber" name="561" href="#561">561</a>       <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.key;
<a class="jxr_linenumber" name="562" href="#562">562</a>     }
<a class="jxr_linenumber" name="563" href="#563">563</a> 
<a class="jxr_linenumber" name="564" href="#564">564</a>     <strong class="jxr_keyword">public</strong> V getValue() {
<a class="jxr_linenumber" name="565" href="#565">565</a>       <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.value;
<a class="jxr_linenumber" name="566" href="#566">566</a>     }
<a class="jxr_linenumber" name="567" href="#567">567</a> 
<a class="jxr_linenumber" name="568" href="#568">568</a>     <strong class="jxr_keyword">public</strong> V setValue(V value) {
<a class="jxr_linenumber" name="569" href="#569">569</a>       <strong class="jxr_keyword">return</strong> put(key, value);
<a class="jxr_linenumber" name="570" href="#570">570</a>     }
<a class="jxr_linenumber" name="571" href="#571">571</a> 
<a class="jxr_linenumber" name="572" href="#572">572</a>     @Override
<a class="jxr_linenumber" name="573" href="#573">573</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> hashCode() {
<a class="jxr_linenumber" name="574" href="#574">574</a>       <strong class="jxr_keyword">return</strong> key.hashCode() * 31 + value.hashCode();
<a class="jxr_linenumber" name="575" href="#575">575</a>     }
<a class="jxr_linenumber" name="576" href="#576">576</a> 
<a class="jxr_linenumber" name="577" href="#577">577</a>     @Override
<a class="jxr_linenumber" name="578" href="#578">578</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> equals(Object o) {
<a class="jxr_linenumber" name="579" href="#579">579</a>       <strong class="jxr_keyword">if</strong> (!(o instanceof ReferenceMap.Entry)) {
<a class="jxr_linenumber" name="580" href="#580">580</a>         <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="581" href="#581">581</a>       }
<a class="jxr_linenumber" name="582" href="#582">582</a> 
<a class="jxr_linenumber" name="583" href="#583">583</a>       <a href="../../../../../../com/googlecode/ehcache/annotations/util/guice/ReferenceMap.html">Entry</a> entry = (Entry) o;
<a class="jxr_linenumber" name="584" href="#584">584</a>       <strong class="jxr_keyword">return</strong> key.equals(entry.key) &amp;&amp; value.equals(entry.value);
<a class="jxr_linenumber" name="585" href="#585">585</a>     }
<a class="jxr_linenumber" name="586" href="#586">586</a> 
<a class="jxr_linenumber" name="587" href="#587">587</a>     @Override
<a class="jxr_linenumber" name="588" href="#588">588</a>     <strong class="jxr_keyword">public</strong> String toString() {
<a class="jxr_linenumber" name="589" href="#589">589</a>       <strong class="jxr_keyword">return</strong> key + <span class="jxr_string">"="</span> + value;
<a class="jxr_linenumber" name="590" href="#590">590</a>     }
<a class="jxr_linenumber" name="591" href="#591">591</a>   }
<a class="jxr_linenumber" name="592" href="#592">592</a> 
<a class="jxr_linenumber" name="593" href="#593">593</a>   <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> ensureNotNull(Object o) {
<a class="jxr_linenumber" name="594" href="#594">594</a>     <strong class="jxr_keyword">if</strong> (o == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="595" href="#595">595</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException();
<a class="jxr_linenumber" name="596" href="#596">596</a>     }
<a class="jxr_linenumber" name="597" href="#597">597</a>   }
<a class="jxr_linenumber" name="598" href="#598">598</a> 
<a class="jxr_linenumber" name="599" href="#599">599</a>   <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> ensureNotNull(Object... array) {
<a class="jxr_linenumber" name="600" href="#600">600</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; array.length; i++) {
<a class="jxr_linenumber" name="601" href="#601">601</a>       <strong class="jxr_keyword">if</strong> (array[i] == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="602" href="#602">602</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"Argument #"</span> + i + <span class="jxr_string">" is null."</span>);
<a class="jxr_linenumber" name="603" href="#603">603</a>       }
<a class="jxr_linenumber" name="604" href="#604">604</a>     }
<a class="jxr_linenumber" name="605" href="#605">605</a>   }
<a class="jxr_linenumber" name="606" href="#606">606</a> 
<a class="jxr_linenumber" name="607" href="#607">607</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> writeObject(ObjectOutputStream out) <strong class="jxr_keyword">throws</strong> IOException  {
<a class="jxr_linenumber" name="608" href="#608">608</a>     out.defaultWriteObject();
<a class="jxr_linenumber" name="609" href="#609">609</a>     out.writeInt(size());
<a class="jxr_linenumber" name="610" href="#610">610</a>     <strong class="jxr_keyword">for</strong> (Map.Entry&lt;Object, Object&gt; entry : delegate.entrySet()) {
<a class="jxr_linenumber" name="611" href="#611">611</a>       Object key = dereferenceKey(entry.getKey());
<a class="jxr_linenumber" name="612" href="#612">612</a>       Object value = dereferenceValue(entry.getValue());
<a class="jxr_linenumber" name="613" href="#613">613</a> 
<a class="jxr_linenumber" name="614" href="#614">614</a>       <em class="jxr_comment">// don't persist gc'ed entries.</em>
<a class="jxr_linenumber" name="615" href="#615">615</a>       <strong class="jxr_keyword">if</strong> (key != <strong class="jxr_keyword">null</strong> &amp;&amp; value != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="616" href="#616">616</a>         out.writeObject(key);
<a class="jxr_linenumber" name="617" href="#617">617</a>         out.writeObject(value);
<a class="jxr_linenumber" name="618" href="#618">618</a>       }
<a class="jxr_linenumber" name="619" href="#619">619</a>     }
<a class="jxr_linenumber" name="620" href="#620">620</a>     out.writeObject(<strong class="jxr_keyword">null</strong>);
<a class="jxr_linenumber" name="621" href="#621">621</a>   }
<a class="jxr_linenumber" name="622" href="#622">622</a> 
<a class="jxr_linenumber" name="623" href="#623">623</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> readObject(ObjectInputStream in) <strong class="jxr_keyword">throws</strong> IOException,
<a class="jxr_linenumber" name="624" href="#624">624</a>       ClassNotFoundException {
<a class="jxr_linenumber" name="625" href="#625">625</a>     in.defaultReadObject();
<a class="jxr_linenumber" name="626" href="#626">626</a>     <strong class="jxr_keyword">int</strong> size = in.readInt();
<a class="jxr_linenumber" name="627" href="#627">627</a>     <strong class="jxr_keyword">this</strong>.delegate = <strong class="jxr_keyword">new</strong> ConcurrentHashMap&lt;Object, Object&gt;(size);
<a class="jxr_linenumber" name="628" href="#628">628</a>     <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
<a class="jxr_linenumber" name="629" href="#629">629</a>       K key = (K) in.readObject();
<a class="jxr_linenumber" name="630" href="#630">630</a>       <strong class="jxr_keyword">if</strong> (key == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="631" href="#631">631</a>         <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="632" href="#632">632</a>       }
<a class="jxr_linenumber" name="633" href="#633">633</a>       V value = (V) in.readObject();
<a class="jxr_linenumber" name="634" href="#634">634</a>       put(key, value);
<a class="jxr_linenumber" name="635" href="#635">635</a>     }
<a class="jxr_linenumber" name="636" href="#636">636</a>   }
<a class="jxr_linenumber" name="637" href="#637">637</a> 
<a class="jxr_linenumber" name="638" href="#638">638</a> }
</pre>
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